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sql - 存储过程 Advantage Database SQL 中出现错误的意外令牌

问题描述

我有一个存储过程，它给了我一个意外的令牌；当我尝试执行此语句时，ORDER 期待分号。

从#temp 中选择年份，其中年份不为空 ORDER BY year DESC；

如果我删除ORDER BY year DESC；该程序正常工作。

我已经尝试了所有可能的方法来按降序对结果表进行排序。我对 SQL 相当陌生，所以我确信它很简单。TIA。

// --------- 完整的存储过程 ------ //

ALTER PROCEDURE GetYearForExhaustCatalog
   ( 
      CatCodeString Memo,
      Year CHAR ( 4 ) OUTPUT
   ) 
BEGIN 
/*

  EXECUTE PROCEDURE GetYearForExhaustCatalog('(e.catalogcode= ''2182'')');

  EXECUTE PROCEDURE GetYearForExhaustCatalog('');


*/  

DECLARE @CatCodeString string;
DECLARE @SQL string;

@CatCodeString = (SELECT CatCodeString FROM __input);

if @CatCodeString IS NULL or @CatCodeString = '' then
  select e2.year,
  (SELECT top 1 e2.year
  FROM  eenginecatalog e LEFT JOIN exhaustengine e2 ON e2.app_no=e.app_no)
  as year
  into #temp
  from Exhaustengine e2;
  select year from #temp where year is not null
  GROUP BY  year
  ORDER BY  year DESC;
else
  @SQL = 
    'select e2.year, '+ 
    '(SELECT top 1 e2.year '+
    'FROM  eenginecatalog e LEFT JOIN exhaustengine e2 ON e2.app_no=e.app_no and '+
       @CatCodeString +' ) '+ 
    'as year '+
    'into #temp '+
    'from Exhaustengine e2; '+
    'select year from #temp where year is not null '+
    'GROUP BY  year '+
    'ORDER BY  year DESC ';
  execute immediate @SQL;
end;

insert into __output
  select year from #temp where year is not null ORDER BY year;
  drop table #temp;

END;

标签： sqlstored-proceduresadvantage-database-server

解决方案

ORDER BY插入特殊__output表时，似乎 ADS 不喜欢该子句。

这也不起作用：

CREATE PROCEDURE MyProcedure(Year INTEGER OUTPUT) 
BEGIN 

CREATE TABLE #tmp ("Year" INTEGER);

INSERT INTO #tmp ("Year") VALUES (2019);
INSERT INTO #tmp ("Year") VALUES (2017);
INSERT INTO #tmp ("Year") VALUES (2018);

INSERT INTO
  __output
SELECT
  "Year"
FROM #tmp
ORDER BY
  "Year";

DROP TABLE #tmp;

END;

它失败并显示您收到的相同错误消息：

poQuery: Error 7200:  AQE Error:  State = 42000;   NativeError = 2117;  [SAP][Advantage SQL Engine]Unexpected token: ORDER -- Expecting semicolon. -- Location of error in the SQL statement is: 269 (line: 15 column: 1)

作为一种解决方法，您可以创建另一个对结果进行排序的临时表：

CREATE PROCEDURE MyProcedure(Year INTEGER OUTPUT) 
BEGIN 

CREATE TABLE #tmp ("Year" INTEGER);

INSERT INTO #tmp ("Year") VALUES (2019);
INSERT INTO #tmp ("Year") VALUES (2017);
INSERT INTO #tmp ("Year") VALUES (2018);

SELECT
  *
INTO #sorted
FROM #tmp
ORDER BY
  "Year"
;

INSERT INTO
  __output
SELECT
  "Year"
FROM #sorted;

DROP TABLE #sorted;
DROP TABLE #tmp;

END;

这可以正常工作，并且数据已排序。

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